Centers for Disease Control and Prevention (2016). Prescribing Data. Injury prevention and Control: Opioid Overdose. Retrieved from: http://www.cdc.gov/drugoverdose/data/prescribing.html]

Daubresse M, Chang H, Yu Y, Viswanathan S, et al. (2013). Ambulatory diagnosis and treatment of nonmalignant pain in the United States, 2000 – 2010. Medical Care; 51(10): 870-878. http://dx.doi.org/10.1097/MLR.0b013e3182a95d86

Department of Safety and Professional Services (2016). Wisconsin Prescription Drug Monitoring Program. Retrieved from : http://165.189.64.111/WI-PDMP.

Opoien, J. (2015, Dec. 2). Led by state Rep. John Nygren, Wisconsin families caught in heroin’s grasp fight back. The Capitol Times. Retrieved from: http://host.madison.com/ct/news/local/govt-and-politics/led-by-state-rep-john-nygren-wisconsin-families-caught-in/article_640a242f-91d6-5dd6-a8c4-ca46a14304d8.html

Wisconsin Act 55 (2015). Wisconsin Act 55. Retrieved from: https://docs.legis.wisconsin.gov/2015/related/acts/55